Actually, in re-reading the seeding section, scratch the 16 team groups thing. That was in the presentation given to the officials, but it's not hard written into the new seeding procedures, so I can see that not applying for football (although that exception is not explicitly written at this time).
Instead, just note that subdividing is not mentioned in any way...
4.1.18 Seeding:
(a) Once the (64) qualifying teams are determined, they will be divided into four (4) groups, (i.e. East, Mideast, Midwest, West) based upon the longitude of each school.
(b) Seed all first place, regular season conference champions by 22-game winning percentage (10-game, football; All games, Tennis, Wrestling & Lacrosse) followed by;
(c) Conference tournament champions by 22-game winning percentage (10-game, football; All games, Tennis, Wrestling & Lacrosse), followed by;
(d) All other qualifying teams by 22-game winning percentage (10-game, football; All games, Tennis, Wrestling & Lacrosse)
(1) All ties for seeding in (a), (b) or (c) will be broken by:
(i) All Head-to-Head Competition
Note: The non-conference game(s) that are dropped for seeding purposes may still be
used in breaking a tie.
Note: All teams involved in the tie must have played each other.
(ii) 24-game record (11-game, Football; All games, Tennis, Wrestling and Lacrosse)
(iii) MaxPreps Ranking (last available ranking at the time of the seeding)
(iv) Draw